<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
	</head>
	<body>
	</body>
	<script type="text/javascript">
//		var reg = /[abc47]/;
		var reg = /[^A-Z]/;
		var str = "dhhv4hkdskvshkd";
		console.log(reg.test(str))
	</script>
</html>
